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lorenr · 01-20-2021, 03:54 PM

I remember when I was in grade school in the 1950's. In geography, the teacher informed us that soon there would be 2 billion people on earth.

Today there are over 7 billion. The world is really changing.

No doubt, noise pollution and many other types of pollution are going to make life more difficult. We are going to need to deal with lots of issues in the future. If you are not effected, you are very lucky.

01-20-2021, 03:54 PM	#8
lorenr Junior Member Join Date: Jul 2014 Posts: 48 Likes: 259 Liked 19 Times in 9 Posts	Re: Mufflers I remember when I was in grade school in the 1950's. In geography, the teacher informed us that soon there would be 2 billion people on earth. Today there are over 7 billion. The world is really changing. No doubt, noise pollution and many other types of pollution are going to make life more difficult. We are going to need to deal with lots of issues in the future. If you are not effected, you are very lucky.